（China）YY313B Mask Tightness Tester
1. Sampling volume: 1-3L/min;
2. Fit coefficient test: direct test;
3. The test results are automatically stored;
4. Allowable maximum sampling concentration: 35000 grains/L
5. Light source and lifespan: semiconductor laser (lifetime greater than 30,000 hours)
6. Environmental conditions for use: temperature: 10°C-35°C, humidity: 20%-75%, atmospheric pressure: 86kPa-106kPa
7. Power requirements: 220V, 50Hz;
8. Dimensions (L×W×H): 212*280*180mm;
9. Product weight: about 5Kg;
Particle tightness (suitability) test for determining masks;
GB19083-2010 technical requirements for medical protective masks Appendix B and other standards;
1. Adopt well-known brand high-precision laser counter sensor to ensure accurate, stable, fast and effective sampling;
2. Using multi-functional software control, the results can be obtained automatically, the measurement is accurate, and the database function is powerful;
3. The data storage function is powerful, and it can be imported and exported to the computer (according to actual needs, the data that needs to be printed or exported can be arbitrarily selected);
4. The instrument is lightweight and easy to carry. Measurements can be made at different locations;
